Push-button latch.



A. BQ GRUBER.

reusH uom LATCH.

APPLICATION FILED, QCT- 1l, 1917.

Patented Mar. 5, 1918.

`Z 7k l LQ 4Q if? Jeff/ @vf ABGHFBMJD B. GBUBJEB', 0F SAN BEBNABIDIN,CALIFOBN'FM..

PUSH-BUTTON LATCH.

apeeication of Letters Patent.

Patented Mar.. 3, tFile,

application led October lll, 1917. Serial No. 196,065.

To all lwhom t may concern:

Be it known that l, ARCHIBALD B. Groen, a citizen of the United States,residing at San Bernardino, in the county of San Bernardino and State ofCalifornia, have invented certain new and useful Improvements inPush-Button Latches, and l do declare the following to bea full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates generally to hardware, -and more particularly tocertain new and useful improvements in push button lalches for use ondrawers, doors and the li e.

The primary object of the invention is to provide a latch constructionhaving a sliding bolt and means for sliding the bolt, this means beingin push button.

Another object of the invention is to greatly simplify devices of thisclass, and to provide a construction which will be inexpensive, ecientand reliable in operation, and well adapted to the purposes for which itis designed.

With these and other objects in view, the invention consists o f certainnovel features of construction, and the combination and arrangement ofparts as will be hereinafter fully described and claimed.

ln the accompanying drawings forming a part of the application, and 1nwhich similar reference characters designate corresponding `partsthroughoutthe several views.

Figure 1 is a horizontal sectional view through a door or the likewhichis equipped with a device constructed in accordance with this invention,shown in section;

Figs. 2, 3, and 4 are detailed sectional views taken on the planeindicated by the lines 22, 3--3 and l-t respectivelyA of Fig. l; Fig. isa disassembled view of a portion of the device, some of the parts ofwhich are shown in L,section and Fig. 6 is a view similar to Fig. 1 of amodified form of latch.

said device being also the form of a plunger or Referring moreparticularly to the drawings, and especially to Figs. 1 to 5, the letterd desi ates a door or the like in connection with w ich a latch is to beused. The door is provided with a circular mortise B which extends fromits outer edge thereof, and this mortise B communicates near its innerend with the retracted portion C of a mortise D, the latter extendingtransversely of the door A from one side thereof. lf it is desired tooperate the door from the other side thereof it is only necessary toduplicate the parts on said other side.

Disposed withinthe mortise D is a tubular case 1, the latter being openat both of its ends and bein provided substantially midway of its en swith an integrally formed internal annular rib 2. The inner edge of therib 2 forms the wall of a circular opening through which projects ashank 3 which extends axially from oneI end of a latch bolt ll. Thevother or outer end of the latch bolt 4 is beveled as at 5 for anobvious purpose.

The free end of threaded to adapt it for connection to the adjacent endof a yoke 6, said end being necessarily provided with an internallythreaded opening 7. The other end of the yoke 6 is provided with a slot8 on its exterior side, and this slot is adapted to receive a screwdriver when the yoke/is to be connected to the shank 3 of the bolt 4, itbeing understood that the bolt 4C is held stationary while the yoke 6 isturned.

rlhe last mentioned end of the yoke 6 is beveled on its inner side attwo diametrically o posite points as shown at 9, these points eingopposite the opening 10 which extends diametrically through the yoke,the latter being cylindrical. in cross sectional contour to fit into therear end of the tubular easel.

The 4reference numeral 11 represents a plunger which is disposed in theretracted portion 6 of the mortise D and which extends through anopening 12 in the adjacent side of the case 1 and has a beveled face 13to engage the adjacent beveled face 9 of the rear end of the yoke 6.Illhis plunthe shank 3 is screw ger 11 is provided with an axiallyextending shank or stem 14, the free end of which is screw threaded to tinto a suitable opening or recess in the inner side of a button or head15, bthe latter being disposed in the mortise D adjacent the outer endof the same. The button or vhead 15 is preferably disposed flush withthe adjacent face or side opening through of the door A when it is inits normal position.

A wear plate 16 is disposed in abutting relation to the inner end of thelarger portion of the mortise D and held in place by means of suitablesecuring elements here shown in the form of screws 17 which extend intothe body of the door A. The plate 16 is provided with a centrallyarranged which the shank 14 of the plunger .11 extends. This opening isless in diameter than the plunger 11 so that it serves as a means forholding the plunger in place.

To hold the plunger 11 in its retracted position and incidentally tohold the button 13 normally with v its outer face disposed flush withthe adjacent face or side of the door A, a coil spring 18 is disposedbetween the plate 16 and the button 15, said coil' spring surroundingthe shank 14 of the plunger 11 as shown.

The latch bolt 4 is normally held in projected position by means of acoil spring 19 disposed between the head of the bolt and the annular rib2 formed in the case 1. This coil spring surrounds the shank 3 of thebolt. The operation of the device will be readily understood withoutdescription other than stating that in order to retract the latch bolt4, it is only necessary to move the plunger ,11 farther into the opening10 of the yoke 6 by pushing or depressing the button 15 farther into themortise D. This causes the beveled end of the plunger 11 to engage oneof the beveled edges of the outer end of the yoke 6 and cause a slidingrearward movement of the yoke and consequently the bolt 4. As soon asthe pressure is relieved from the button 15, the various parts of thedevice will be returned to their normal positions under the action ofthe coil springs 18 and 19. f

In assembling the different parts of the device together, the coilspring 19 is irst j disposed around the shank 3, and the shank and boltare inserted into one end of the case 1, the free end of the shankextending through the opening formed by the inner edge of the annularrib 2 into the other end of the case. The yoke 6 is then inserted intothis other end of the case, and connected to the shank 3 in the mannerhereinbefore explained. The case 1 is then driven into the mortise 3,and will be retained therein by the frictional engagement between themortise and the outer side of the case and also by the plunger 11 whichis later extended through the opening 12 in the case.

In Fig. 6 of the drawings, a slightly modiied form of the invention isshown in which the door A is provided with a mortise B and a mortise Eof uniform size throughout its length and of circular shape. The mortiseE extends transversely 0f the door from one side thereof intocommunication with the mortise B. If it is desired to operate the doorfrom the other side thereof it is only necessary to duplicate the partson said other side. Disposed within the mortise E and having threadedconnection with the adjacent side of the case 1 is a tubular lining 20.Slidable in this lining 20 is a plunger 21, the inner end of which isbeveled the same as the plunger 11 is beveled, while its outer end isprovided with an internally threaded recess 22 adapted to receive theexternally threaded end of a stem 23. This stem 23 extends through abore 24 arranged in a knob 25 and has a head or button 26 formed at itsother or outer end. The knob 25 is threaded to the end of the tubularlining 20 which extends a slight distance beyond the adjacent side ofthe door A, and has its bore 24 enlarged at its outer end as at 27 so asto receive a coil spring 28 which is disposed betweenthe button 26 andthe inner end of the enlarged portion 27 of the bore. The action ofthismodied form of the invention is similar to that of the preferredform before mentioned.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, use and operation of the devicewill be readily understood without a more extended explanation.

As various changes in form, proportion, and in the minor details ofconstruction may be resorted to without departing from the spirit ofthis invention, it is to be understood that I do not wish to be limitedto the construction herein shown and described other than as claimed. Itis also to be understood that this latch device can be proportioned andequipped in combination with various locks and for various purposes.

I claim A device of the class described comprising a, tubular case openat both ends and provided with an integrally formed rib on its interiorside midway of its ends, a latch bolt slidable within one end of saidcase and having a shank projecting axially from the other end thereofthrough the o ening formed by the inner edge of said ri into theJ otherend of said case, the free end of said shank being screw threaded, ayoke disposed in said other end of said case and having an internallythreaded opening in its lnner end to removably receive the threadedmemos end of said shank, the other end 0f Said'yoke bemg provided on itsexterior sid@ Wlth a slot to receive a tool for turning said yoketothread it to said shank, a e011 spring sur- 5 rounding said shank anddisposed between the head of said bolt and. the adjacent side vof saidrib, and means engaging said yoke for moving said bolt.

In testimony whereof have hereunioeet my hand in the presence of ibwosubseribmg 10 Witnesses.

A RCMBALD B. GRUBER.

Witnesses: l

LEANDER A. CLARK, Louis Gr. Moyens.

